Automatic feed regulating and mixing device for crude-oil burners.



J. B. WILLINGS. AUTOMATIC FEED BEGIILATING AND MIXING DEVICE FOR CRUDEOIL BURNERS.

APPLICATION FILED AUG. 9, 1909.

' Patented Aug. 2, 1910.

UNITED STATES PAENT FCE,

JOSEPH B. WILLINGS, OF MARICOPA, CALIFORNIA.

AUTOMATIC FEED REG-ULATING AND MIXING- IJEVICE FOR CRUDE OIL BURNERS.

To all whom it may concern:

Be it known that I, J OSEBH B. WILLINGS, a citizen of the United States,residing at Maricopa, in the county of Kern and State of California,have invented certain new and useful Improvements in Automatic FeedRegulating and Mixing Devices for Crude- Oil Burners; and I do declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention'relates to improvements in fuel feeding and mixingdevices for crude oil burners.

1 One object of the invention is to provide a device of this characterbymeans of which the supply of oil to the burners of a steam 'boilerwill be automatically regulated by the pressure of steam in the boiler,thereby increasing or diminishing the size of the flame which heats theboiler.

Another object is to provide an automatic fuel oil feed regulating andmixing device, having means to control the automatic feeding mechanism,whereby no more than apredetermined quantity of oil will be fed to theburner.

A further object is to provide an automatic fuel oil feed regulating andmixing device having a mixing chamber with an air inlet port, wherebyair will combine with the oil and steam in said chamber and thus becarried as fuel to the burners, causing a perfect and completecombustion.

With the foregoing and other objects in view, the'invention consists ofcertain novel features of construction, combination and arrangement ofparts, as will be more fully described and particularly pointed out inthe appended claims.

In the accompanying drawings: The figure is a vertical longitudinalsectional view of a feed regulating and mixing device, constructed inaccordance with my inventions.

Referring more particularly to the drawings, 1, denotes a feedregulating and mixing device which is here shown and is preferably inthe form of a tubular casing having in one end an oil chamber 2,provided with a threaded inlet port 3, to which is adapted to beconnected an oil supply pipe, (not shown). The oil chamber 2,communicates with a steam and oil conducting tube 4,

Specification of Letters Patent.

Application filed August 9, 1909.

Patented Aug. 2, 1910.

Serial No. 511,978.

through a reduced passage 5, formed between said chamber 2, and the tube4:.

Arranged in the oil chamber 2, and preferably formed integrally with theadjacent end of the device is a steam injecting tube 6, the inner end ofwhich terminates adjacent to the reduced passage 5, while the outer endconnects with a threaded nipple 7, to

which is adapted to be connected a steam conducting pipe from theboiler. The opposite end of the conducting tube 4, from the passage 5,projects into a mixing chamber 8, which is here shown, and is preferablyprovided with a threaded air inlet port 9, with which is adapted to beconnected an air supply pipe (not shown). The outer end of the mixingchamber 8, beyond the end of the conducting tube 4:, is reduced andthreaded exteriorly to receive an oil conducting pipe, by means of whichthe fuel from the mixing chamber 8, is conducted to the burners of theboiler.

In the drawings, the device is shown as being provided with an oilcontrolling valve 10, by means of which the amount of oil supplied tothe burners may be automatically regulated. The controlling valve 10, ispreferably arranged in the oil and steam conducting tube 4, at asuitable point adjacent to and between the reduced passage 5, and thedischarged end of the conducting tube 4. The valve 10, is provided witha casing 11, which preferably has a screw threaded connection with theconducting tube 4:, as shown, and said valve is provided on its upperend with the stuffing box 12, through which operates the stem 13, of thesaid valve. Arranged on the valve casing 11, and projecting above thesame is a dome or chamber 14;, in the upper end of which is secured anautomatic valve regulating mechanism comprising a casing 15, formed inupper and lower separable sections and having arranged therein atransversely disposed elastic diaphragm 16, against the under side ofwhich engages a disk or plate 17, secured on the upper end of the valvestem 13, which projects through and is slidably mounted in the lowerside of the said casing. In the upper side of the casing 15, is formed athreaded port 18, with which is adapted to be connected a steamconducting pipe from the boiler.

Pivotally mounted in the dome l4, and

controlled.

In the operation of the device, the steam from the boiler enters theinjecting tube through the steam conducting pipe and by said tube isinjected through the reduced passage 3, in the tube 4, thereby causing astrong suction from the oil chamber 2, which will draw the oil from saidchamber and force the same through the reduced passage into and throughthe conducting tube 4, into the mixing chamber 8, where it combines withthe air in said chamber and is conducted in the form of fuel through theconducting pipe to the burner of the boiler.

In order to regulate the flow of the oil through the conducting tube 4,I provide a. suitable controlling valve, which is adapted to open orclose the conducting tube 4, to a greater or less extent, therebycausing the steam injected through the passage 5, into the conductingtube 4, to act upon the said controlling valve with the requiredpressure so as to regulate the amount of oil passing through theconducting tube 4, to the mixing chamber 8.

In the drawings, the regulating valve 10, is shown as being providedwith an automatic steam controlled means for operating the same, wherebywhen the pressure of steam in the boiler increases beyond a normal orpredetermined pressure, said valve will be operated to reduce the amountof oil passing through the conducting tube 4, as hereinbefore described.By adjusting the weight 22, on the lever 20, which is connected to thestem 13, of the regulating valve 10, the amount of steam pressurerequired to operate said valve may be accurately controlled. Y

By providing the regulating valve herein shown and described, the amountof oil and steam passing through the conducting tube 4, is controlled sothat no more than a predetermined quantity of oil can be fed to theburner. While the device is shown in the drawings and described as beingprovided with a mixing chamber 8, having an air inlet port 9, it isobvious that I may with equal advantage employ other means for combiningair with the oil to form the fuel.

From the foregoing description taken in connection with the accompanyingdrawings, the construction and operation of the invention will bereadily understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of the invention, as defined in theappended claims.

Having thus described my invention what I claim is:

1. A fuel feeding device for crude oil burners comprising a conductingtube having in one end an oil chamber, a steam injecting tube in saidoil chamber, a mixing chamber surrounding the outer endof the conductingtube, a valve casing provided with a hollow dome screwing in the condocting tube between the mixing chamber and oil and steam inject-ingchambers, a regulating valve arranged in said conducting tube andmovable into the valve casing to regulate the quantity of oil and steampassingthrough the tube, a weightedlever pivoted to the dome and looselyconnected with the stem of the regulating valve and an elastic diaphragmin the upper end of the dome engaging the upper end of the valve stemand adapted to move the valve into cutoff position when the pressureupon the diaphragm over-balances the weighted lever.

2. A fuel feeding devicefor crude oil burners comprising a conductingtube having in one end an oil chamber, a steam injecting tube in saidoil chamber, a mixing chamber surrounding the outer end of theconducting tube, a valve casing provided with a hollow dome screwing inthe conducting tube between the mixing chamber and oil and steaminjecting chambers, a regulating valve arranged in said conducting tubeand movable into the valve casing to regulate the quantity of oil andsteam passing through the tube, a weighted lever pivoted to the casingand having a slotted engagement with the valve stemto normally hold thevalve in raised position, a disk upon the upper end of the valve stem,an elastic diaphragm arranged in the casing and engaging said disk, anda cover plate having a steam inlet opening over said diaphragm, thediaphragm being adapted to move the valve in a cut-off position when thepressure of steam thereupon over-balances the weighted lever.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

JOSEPH B. WILLINGS.

